Which of the following is a sign of a stroke that a CNA should recognize?

Sudden numbness is a classic sign of a stroke and is part of what healthcare professionals refer to as the FAST acronym—Face drooping, Arm weakness, Speech difficulties, and Time to call emergency services. When a stroke occurs, it disrupts blood flow to the brain, which can lead to sudden weakness or numbness, especially on one side of the body. This is a critical symptom that needs immediate attention, as it often signifies that part of the brain is not receiving the oxygen it needs due to interrupted blood supply.

In contrast, the other options do not represent typical stroke symptoms. A slow heart rate, while potentially concerning, is not specifically indicative of a stroke. A persistent cough may suggest respiratory or pulmonary issues, and frequent urination could signal a variety of conditions, none of which are direct signs of a stroke. Recognizing sudden numbness is vital for quick intervention and can greatly impact the patient's outcome, making it essential for a CNA to be able to identify this sign.